Mig Welding Wire AWS Classification ER309 ER309L Material Stainless Steel Process MIG Welding (GMAW) Wire Diameter 0.023 in Tensile Strength (As Welded) 85 ksi Yield Strength (Minimum Required) 58 ksi Yield Strength (As Welded) 58 ksi Spool Type Plastic Spool Series ER309/309L Weight 30 lb For Material Type Stainless Steel to Carbon Steel Stainless Steel to Low-Alloy Steel Stainless Steel to Stainless Steel For Material Grade 304 304N 305 308 309 309S